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Max The Magnificent
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Re: A million lights
Max The Magnificent   12/23/2014 2:19:39 PM
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@brhans: That alone probably gives you a rough idea how long ago this was...

Wait till you get to my age -- I can no longer remember the 1970s or 1980s LOL

brhans
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Re: A million lights
brhans   12/23/2014 1:55:29 PM
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I faced a similar conundrum many (many, many) years ago when I needed to demo the 5-channel analyser I made for a university project. Eventually I settled on Alphaville's "Big in Japan". That alone probably gives you a rough idea how long ago this was...

tom-ii
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Re: gotchas....
tom-ii   12/23/2014 10:22:02 AM
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Like I said - I'm using a max of 50 (out of 255) along with a diffuser, and they're right at the edge of "too bright"

Max The Magnificent
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Re: gotchas....
Max The Magnificent   12/23/2014 10:20:27 AM
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@tomii: ...remember, "full on" is pretty danged obnoxious.  Even with a diffuser.

Thise NeoPixels are really bright for sure -- I'm very much looking forward to seeing what they look like shining through my Fresnel lenses -- of course if they are too bright I can always PWM them down :-)

tom-ii
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Re: gotchas....
tom-ii   12/23/2014 10:17:47 AM
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That's a pretty straight-forward and sensible way to go, but remember, "full on" is pretty danged obnoxious.  Even with a diffuser.

Max The Magnificent
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Re: King Midas
Max The Magnificent   12/23/2014 10:16:35 AM
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@tom-ii: Maybe hot glue will be your friend?

I only recently came to realize how useful a hit glue gun can be -- but you are right -- I do now count it as my friend :-)

 

Max The Magnificent
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Re: gotchas....
Max The Magnificent   12/23/2014 10:15:10 AM
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@Tom-ii: You should see some of my videos on using those - I find that anything above 50 (out of 255) starts to get pretty obnoxious. Also, if you're controlling brightness based on some other parameter, you'll likely want to "linearize" it.

Very interesting video -- I'll remember that for the future -- but in my case I don't think I'll be controlling brightness in quite this way.

I can't say for sure until I start playing with it, but I think my LEDs will always be full-on -- I'll be using the amplitude of each frequency band to control the "height" of the LEDs in the associated column.

tom-ii
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Re: King Midas
tom-ii   12/23/2014 9:58:09 AM
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Maybe hot glue will be your friend?  Or 2-part epoxy?

tom-ii
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Re: gotchas....
tom-ii   12/23/2014 9:56:36 AM
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You should see some of my videos on using those - I find that anything above 50 (out of 255) starts to get pretty obnoxious.

 

Also, if you're controlling brightness based on some other parameter, you'll likely want to "linearize" it.

 

http://youtu.be/btjCVDrRVXk

Max The Magnificent
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Re: gotchas....
Max The Magnificent   12/23/2014 9:53:38 AM
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@Antedeluvian: My problem is remebering to allow for power dissipation.

Ha -- I already thought of this -- there's a panel that goes on the back -- it's got a series of 1" holes across the bottom and across the top -- so I think I'll be able to get sufficient draft to keep evereything cool.

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